Improvement in drawing-frame



waited gister',

OLIVER P. HUSSEY, OF NASHUA, NEW'-HAMPSHIRE.

Lettersllratent No. 94,752, dated September 14, 1869.

i bw- IMPROVEMENT IN DRAWING-FRAME.

AThe Schedule referred to in these Letters Patent and making part of the same.

*nuota- To all persons to whom these presents may come:

Be it known that I, OLIVER P. HUssEY, of Nashua, ofthe county of Hillsborough, and Stateof New Hampshire, have made a. new and useful invention, having reference tothe draught-rollers and the traverse yarn-- guides of drawing-frames, or various other machines lfor spinning roving or yarn; and I do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawings, of which- Figure l is a top view;

Figure 2 a front elevation;

Figure 3, an end view; and

Eigure 4, a transverse section of a set of draughtrollers and traverse-guides, with my invention applied thereto.

Figure 5 is a top view ofthe slide-bar and its operative cam, to be'hereinafter described.

The purpose of my invention is to maintain each of the guides throughout its motions at the same distance as the-other from the middle of the top roller, in order that the amount of pressure exerted by such roller on both of the yarns, going through the guides and between the rollers, may be alike.

By'the common method of traversing the guides,

they move simultaneously in one direction, so that while one may be approaching the middle of the top roller, the other will be departing therefrom; but, with my invention, both guides approach the middle of the top roller at one and tbesame time, and they next' simultaneously depart from it, each in the mean time preserving' the same distance as the other from the middle oi' thetop roller.

As the weight or power which depresses the top roller on the two strands, yarns or rovings, going through the guides and between the-draught-rollers, is applied at the middle of' such top roller, it will be seen that, with my improvement, the pressure on each yarn or roving will be alike, whereas such will not be the case when the guides are moved simultaneously in the same direction, for, under such circumstances, the leverage will be increasing on one yarn, and diminishing on the other, thus producing irregularities of draught of the' yarn or roving, and being productive of other injurious results, all of which are prevented by my improvement.

In the drawings-7- A and B are a pair of draught-rollers, O being the weight suspended from the middle of the upper of them.

D is the frame, in which the rollers are supported.

F G are the yarn yor roving-guides, which, in this machine, are projected -from separate slide-bars H I, arranged in the' frame and applied to it, so as to be capable of being moved endwise thereon.

Two studs, a b, project downward from each of the slide-bars, and through one of two slots, c d, made in the top board or part e of the frame.

One arm of' a lever, U, goes between the two rearmost studs, such lever being pivot-ed to a bracket, V.

The lower arm of the said lever is forked, and spans a stud, L, projecting from an arm, K.

This arm is extended down from a slide-rod, L, supported on a standard, M. From this slide-rod another arm, N, projects up` ward, and goes between the other two studs a b.

`The slide-rod L has a slot, g, in it, which receives the upper part of a vertical and stationary journal, h. A worm-gear, o, having a cam, P, fixed to it, turns on the said journal and engages with a worm or screw,

S, xed upon a driving-shaft, T. The cam is arranged eccentrically with respect to the gear, and plays between and against two studs, k Z, which are projected down from the'rod L, the whole being as represented in the drawings.

While the worm-gear is in revolution, it will revolve the cam, and thereby cause a reciprocating rectilinear motion to be imparted to the slide-rod L.' This rod, by means of the Atwo arms K N, and the lever U, will produce reciprocating rectilinear movements of the two yarn-guides, such as will cause them at one time to approach one another, at equal speeds, and next depart from each other at equal speeds, thereby producing the desirable results, as hereinbefore explained.

I claim, in combination with the yarn-guides, the

draught-rollers, and the weight or device for pressing down the upper of such rollers at its middle, mechanism, substantially such as described, for moving the yarn-guides with equal velocities and simultaneously,

rstv towards, and next away from each other, and the centre of' the upper or top roller of the draught-rollers, the whole being substantially in manner andV for the purpose as Set forth,

I also claim, for effecting the movements of the yarn-guides, the combination of the slides H I, the two sets of studs a b, thelever U, the arms K N, the slide-rod L, the studs k l, and the eccentric orcam P, the whole being arranged and, applied t'o the guides F G and the frame ofthe rollers, substantially in man'- ner, andv so as to operate as explained.

OLIVER l?. HUSSEY.

Witnesses:

' E. P. EMnBs'on,

IVORY Hannon. 

